Home / 750,889.72-1,036,221.42-406,726.20

Finding the Fourth Proportional to 750,889.72, 1,036,221.42 and 406,726.20

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Solution

The fourth proportional to 750,889.72, 1,036,221.42 and 406,726.20 is: 561,278.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,889.72 : 1,036,221.42 = 406,726.20 : x
  2. Step 2: Convert to fraction form
    750,889.72/1,036,221.42 = 406,726.20/x
  3. Step 3: Cross multiply
    750,889.72x = 1,036,221.42 × 406,726.20
  4. Step 4: Simplify right side
    750,889.72x = 421,458,400,515.20
  5. Step 5: Solve for x
    x = 421,458,400,515.20/750,889.72
  6. Step 6: Final answer
    x = 561,278.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.